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WP-US-1008 Considerations of Global Equity and Burden-Sharing in Community-Scale Climate Action Planning Peter Erickson, Chelsea Chandler, and Michael Lazarus, SEI December, 2010 Stockholm Environment Institute Working Paper WP-US-1008 Abstract Cities around the world have been leaders in efforts to reduce greenhouse gas emissions, and many have adopted pledges to cut emissions 80% from 1990 levels by 2050. However, while the goal of 80% below 1990 levels by 2050 may be considered very ambitious in terms of the required policies, technologies and actions to achieve it, it may no longer represent an adequate target in terms of confronting the risks of climate change. Furthermore, when applied at a community scale, such goals do not consider the UNFCCC principle of ―common but differentiated responsibility‖ that places greater burden on developed countries to finance and deliver emission reductions. In setting emissions goals, we suggest that communities consider ―burden-sharing‖ approaches that consider historic responsibility and capacity to pay for emissions reductions. To demonstrate the feasibility of such approaches, we apply one burden-sharing framework – the Greenhouse Development Rights – to the City of Seattle, which indicates that to fulfill a global mitigation obligation the community would need to go carbon ―negative‖ before 2020 and progressively more so thereafter. Communities can serve as laboratories for testing replicable models for widespread (e.g., national) adoption. We recommend that further research and pilots explore the mechanics of establishing equity-based community climate goals and the associated financing mechanisms. Global Burden-Sharing in Community-scale Climate Action Planning WP-US-1008 Copyright © 2010 by the Stockholm Environment Institute This publication may be reproduced in whole or in part and in any form for educational or non-profit purposes, without special permission from the copyright holder(s) provided acknowledgement of the source is made. No use of this publication may be made for resale or other commercial purpose, without the written permission of the copyright holder(s). For more information about this document, Contact [email protected]. Stockholm Environment Institute - US 11 Curtis Avenue Somerville, MA 02144-1224, USA www.sei-us.org and www.sei.se Acknowledgements This report was prepared with funding from the Swedish International Development Cooperation Agency via SEI’s Core project funding. We thank Tom Athanasiou, Paul Baer, and our SEI colleagues Sivan Kartha, Eric Kemp-Benedict, and Anja Kollmuss for helpful review of early drafts of this paper. 2 Global Burden-Sharing in Community-scale Climate Action Planning WP-US-1008 Introduction and Background Many cities have been leaders in efforts to reduce greenhouse gas emissions. For example, in much of the last decade (2000-10), when national U.S. leadership on climate was severely lacking, actions by states and cities built momentum for climate policy and action at regional and national levels. Around the world, hundreds of cities have adopted aggressive pledges to cut emissions. Many of those pledges have been in line with a global target of 80% reduction in greenhouse gases (compared to 1990 levels) by 2050. Cities that have so far been leaders in the effort to address climate change are now pondering ―what next‖, especially given the slow pace of action at the national (e.g., US) and international (e.g., UNFCCC) levels. For example, the City of Seattle, a city that has long been a leader in climate action and where this paper’s authors are based, is considering a more ambitious goal.1 In early 2010, the Seattle City Council announced an intention to explore making the city ―carbon neutral‖, and the City is planning to update its climate action plan in 2011. Indeed, the state of knowledge and discourse has advanced somewhat since Seattle and other communities committed to goals of ―80% by 2050.‖ Scientists and politicians alike have helped articulate a growing consensus that the earth’s mean temperature should not exceed 2 degrees C above the pre-industrial level if the earth is to maintain a safe operating space for humanity.2 More recently, many scientists have suggested that a safe operating space might require staying within a 1.5 degrees C increase, and many climate-vulnerable nations have endorsed such a goal. To attain such goals, scientists and civil society are calling for atmospheric carbon dioxide (CO2) levels to be ultimately stabilized at 350 parts per million (ppm).3 Attaining this level would require a dramatic and rapid reduction in global greenhouse gas emissions. The IPCC Fourth Assessment report suggested that even a 450ppm CO2 equivalent trajectory (roughly 400 ppm CO2 alone), which would have a less than 50% probability of achieving a 2 degree C target would require reductions from developed countries on the order of 80-95% from 1990 levels by 2050.4 Therefore, while the goal of 80% below 1990 levels by 2050 may be considered very ambitious in terms of the required policies, technologies and actions to achieve it, it may no longer represent an adequate target in terms of confronting the risks of climate change. Additional scientific assessments have further refined what future global emissions pathways could limit warming to 2 degrees C over pre-industrial levels with reasonable confidence. For example, the following figure, taken from the German Advisory Council on Global Change, charts out different possible global CO2 emissions pathways that could limit warming to 2 degrees C. Note that the longer 1 The City of Seattle has long pioneered efforts to address climate change, from the City-owned electric utility’s commitment to net zero emissions to the City’s official goal to reduce greenhouse gas emissions 80% below 1990 levels by 2050. In 2005, Seattle mayor Greg Nickels launched the U.S. Mayor’s Climate Protection initiative to convince other cities to adopt Kyoto protocol targets at the city scale. Over 1,000 mayors around the country have now signed the pledge, with many also including a goal to reduce emissions in their communities by 80% below 1990 levels by 2050. 2 For an assessment of the ―reasons for concern‖ associated with warming of 2 degrees, see Smith et al (2009), http://www.pnas.org.ezproxy.library.tufts.edu/content/106/11/4133.abstract. The 2 degree target was also noted by signers of the Copenhagen Accord. 3 For a summary of the reasons for a 350 ppm target, see Rockstrom et al (2009). 4See Box 13.7, page 776, of the IPCC Fourth Assessment Working Group III Report (Metz et al. 2007). http://www.ipcc.ch/pdf/assessment-report/ar4/wg3/ar4-wg3-chapter13.pdf 3 Global Burden-Sharing in Community-scale Climate Action Planning WP-US-1008 global action is delayed and emissions continue to rise, the faster and deeper the ultimate pathway must be – perhaps to zero globally. 5 Figure 1. Examples of Alternative Global Emissions Pathways to Meet 2° C “Guardrail” (WBGU 2009)6 While Figure 1 illustrates global emissions pathways for achieving a 2 degree target, it does not speak to ―common but differentiated responsibilities‖, a guiding principle of the UNFCCC that places greater burden on developed countries to finance and deliver emission reductions. From a pragmatic as well as moral perspective, the emissions pathway for wealthier regions would need to be even more ambitious than the global pathway shown above. The United States, with a per capita emissions rate that is more than three times higher than China and more than ten times higher than India, for example, would be obliged to curb its emissions more rapidly than these countries, which are still trying to extend basic energy services to hundreds of millions of their underserved population. ―Burden sharing‖ approaches assert that, to be consistent with the ―common but differentiated responsibilities‖ principles of the UNFCCC, relatively prosperous countries have obligations not only to adopt their own ambitious emissions reduction goals, but also to provide financial and technological support to countries or communities with significantly less historical contribution to global emissions and limited capacity to pay for reduction actions (UNFCCC 2009; Baer et al. 2008; WBGU 2009; Chakravarty et al. 2009). The same logic can also be applied to communities. After all, countries are made up of hundreds or thousands of communities, emissions reductions goals will inevitably play out 5The goal of limiting warming to 2 degrees Celsius was also recognized at the Major Economies Forum in July 2009. Note also that a country’s reductions, and the financial responsibility for those reductions, need not be the same. For example, some discussions have focused on payments or other form of financing from developed countries to developed countries to support ―nationally appropriate mitigation actions‖ in those countries. 6 These scenarios were constructed to limit global CO2 emissions to 750 Gt between 2010 and 2050, a level that is believed to yield a 67% chance of averting warming of 2 degrees over pre-industrial levels. 4 Global Burden-Sharing in Community-scale Climate Action Planning WP-US-1008 at the community scale, and (as noted above), communities are increasingly adopting and planning for achievement of greenhouse gas emission reduction targets. Yet little research has explored how to apply burden-sharing approaches at the sub-national (including community) scale. In our view, sub- national regions remain (as they have been in the last decade) important laboratories for climate policy development, especially because these regions continue to push the frontier by adopting ever more- ambitious emissions goals. Including elements of burden-sharing in these regions’ goals could help set the stage for broader discussions of equity and create replicable models for national adoption. Therefore, in this paper, we describe the potential application of a burden-sharing framework to the community scale, using the City of Seattle as an example.